Circuit-controller



C. T- HENDERSON.

CJRCUIT CONTROLLER. APPLicmon men JUNE 5.1915.

1,339,456; Patenmd May 11,1920.

' 1 UNITED STATE S CLARK 'I. HENDERSON, F MILWAUKEE,

HAMMER MFG. (3b., 01: MILWAUKEE, WIS

GONSHT.

PATENT OFFICE.

WISCONSIN, ASSIGNOR TO THE CUTLER- CONSIN, A CORPORATION OF WIS- CIRCUIT-CONTROLLER.

i c To all whom it may concern:

Be it known that I, CLARK T. Hnxmznson, a citizen of the United States. residing at Milwaukee, in the county of Milwaukee 5 and State of Wisconsin, have invented new and useful Improvements in Circuit-Controllers, of which the following is a full, clear, concise, and exact description, reference being had to theaccompanying draw- 10, in", forming a part of this specification.

This invention relates to improvements in circuit controllers.

More particularly the invention relates to circuit breakers, especially those of the overload type and has among provide a simple and effective controller of this'character which will be insured a inst tele 'raphin 2 furthei object is to provide a simple and effective protective controller of the aforesaid character wherein two single pole elctromagnetic switches are employed as a double pole switch.

Other objects and advantages will hereinafter appear.

The accompanying drawing diagrammatically illustrates one embodiment of the invention and the same will now be described, it being understood that the controller illustrated is only one of the possible embodiments of the invention.

The controller illustrated includes two electromagnetic switches 1 and 2 to comlete circuit,between supply lines L and L and translating lines 1 and 1', said switches constituting the equivalent of a doublepole switch. Also the controller includes two overload switches 3 and 4 for tripping the line switches 1 and 2 and a 40. push button control switch togetherwith auxiliary contacts associated with the switch 2 to eifect setting of the line switches.

' The overload switches 3 and 4 have their operating windings connected.in opposite sides of the circuit and both switches are included in series with the operating winding of each line switch. Thus it will be apparent that response of either overload switch will interrupt the circuit of both line switches, thereby effecting interruption of both sides of the controlled circuit.

The push button control switch 5 is provided with a pair of down contacts 6 and a pair of up contacts 7. Bridging of the down contacts ompletes an energizing circuit for its objects to- Specification 01 Letters Patent. Patented Blay 1 1,1920.

1915. Serial No. 32,424.

the line switch 2 while bridging of the up contacts establishes a maintaining circuit for the switch 2 and an energizing circuit for the switch 1, said last two mentioned circuits being also dependent upon response of switch 2 to bridge its auxiliary contacts 8, a and 10.

.More specifically describing the circuit connections, when the switch 5 is depressed it completes circuit from line L by conductors 11 and 12, through the winding of switch 2, by conductor 13, through the overload switch 3, by conductor 14, through the overload switch 4, by conductor 15 'to line L. Thus switch 2 will at once respond to complete one side of the controlled circuit and to brid 10. This establishes a maintaining circuit ge its auxiliary contacts 8, 9 and for the switch 2 from line L, byconductors 11 and16, through auxiliary contacts8 and 10, by conductor 17, to and through the winding of switch 2,. as already traced. Switch 1, however, will not respond and in consequence the controlled circuit will not be completed until the push button switch 5 isreleased. When switch 5' is released it completes circuit from line L, by conductors 11 and 16, through auxilia contacts 8 and 9 of switch 2, through ts up contacts 7, by conductor 19, through the winding of switch 1, to conductor 13 and thence through both overload switches to line L, as already traced. Switch 1 thereupon responds to complete the controlled circuit subject to subsequent interruption by response of either overload switch.- As before stated upon response of either overload switch both line switches are denergized. 3

It will thus be observed that energization of switch 1 is dependent upon prior and continued energization of switch 2 as well as release of the control switch 5 while continued energiza'tipn of switch 2 following -the release of swi ch5 is do own auxiliary contacts. fore, after the switches 1 a been tripped they can only be reset by repeating the operation of the control switch as described above, thereby positively insuring against automatic resetting or telegraphin thereof:

What claim as new and desire to secure by Letters Patent is 1. In a circuit controller, in combina= bviously thereendent uponits.

nd 2 have once.

(ion, a plurality of electro-responsive line switches, means to dencrgize said-switches upon the occurrence of abnormal electrical conditions in the controlled'circuit, and circuit connections for said switches necessitating energization of one prior to energization of another, to insure against reestablishment of the controlled circuit conditions are restored.

until normal 2. In a circuit controller, in combina tion, a plurality of electro-responslve hne switches, means to denergize the same upon the occurrence of abnormal electrical conditions in. the controlled circuit, a common control device for the operating windings of said switches and circuit connections necessitating response of one of said switches prior toanother and different settings of said control device for completion of the energizing circuits of said switches, to insure against telegraphing of the latter after deenergization by said means and to insure against recstablishmeut of the controlled cir 'cuit until normal conditions are restored therein. I

3. In combination, a plurality of electroresponsive line switches, a controller therefor, automatic tripping means for said switches and circult connections insurin against telegraphing of any one of sai switches after tripping thereofirrespective of the retention of said controller in any position thereof.

4. In combination, a plurality of electro responsive line switches, a .controller therefor, automatic tripping means for said switches and circuit connections necessitatin; a number of progressive operations of said controller to effect energization of said switches after tripping of either.

5. In combination, a plurality of electroresponsive line switches, a controller therefor, automatic tripping means for said switches and circuit connections necessitat-.

ing energization of said switch 'progres: sively by progressive movements of said controller to different circuit controlling positions.

6. In combination, a plurality of electron responsive -line switches, a controller therefor, automatic tripping means for Lsaid switches and circuit connections: necessitating energization of said switches progressively and rendering the response of the first switch dependent upon a predetermined operation of said controller while rendering.

the response of the next switch dc )endent upon 'a'subsequent'; operation of tie controllen: p

7. In combination, a plurality of electroresponsive line switches, a controllertherefor, automatic, tripping means for said switches'and circuit connections necessitat- 7 ing energization of said switches pro res-- sively and rendering the response 0 the first switch dependent upon a predetermined operation of saidcontroller while jrendering the responseof, the next switch dependent upon subsequent'operatiomof the controller and prior response ofthe first switch. 8. In combinatiom'a pluralit ofelectrg .responsiie switches,one' contro ling theenergizing circuit (if the other and a maiin taming circuit for itself,;a controller for said switches, circuit connections rendering the energization of one of said switches de ndent upon predetermined positioning 0 said controller and the ener ization of the other ofsaid switches depen ent upon'movement the energization of one of said switches dependent upon predetermined positioning of said controller and the energization of the other of saidswitches upon movement of said controller to another position and autor matic tripping means common 'to bothof said switches.

In witness whereof, 'I have hereunto subscribed my name.

CLARK T. HENDERSON. 

